minor #749 Changing the image to be a relative path to render correctly (weaverryan)

This PR was merged into the 2.x branch.

Discussion
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Changing the image to be a relative path to render correctly

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Tickets       | None
| License       | MIT

Currently, on https://symfony.com/bundles/ux-notify/current/index.html, the image isn't working.

Commits
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6259b5ed Changing the image to be a relative path to render correctly

Author: fullstackdeveloperwebapp

src/Notify/doc/index.rst

@@ -84,7 +84,7 @@ call the ``stream_notifications()`` Twig function anywhere on the page:
 
 Enjoy your server-sent native notifications!
 
-.. figure:: https://github.com/symfony/ux-notify/blob/2.x/doc/native-notification-example.png?raw=true
+.. figure:: ./native-notification-example.png
    :alt: Example of a native notification
 
 Extend the Stimulus Controller